Determine the exact roots for each trigonometric equation a) 2sinθ - 1 = 0, 0≤θ<360° b) cos2 θ + cosθ -2=0, 0≤θ<2Pi Thanks!!!!

Determine the exact roots for each trigonometric equation a) 2sinθ - 1 = 0, 0≤θ<360° b) cos2 θ + cosθ -2=0, 0≤θ<2Pi Thanks!!!!

Without the use of a calculator, determine the exact value of each trigonometric ratio. a) sin 5/4Pi b) sec 2/3Pi Thanks!!

Find the first six terms of the sequence defined recursively by a1=2, a2=3 and an+1=an-an-1

A geometric series begins 10,5, 5/2, 5/4, 5/8, ... Find the common ratio r for this series and then the formula for the nth term of series, an. What is a10?

Prove that 3+32+33+...+3n=3/2(3n-1) by mathematical induction.

If the fourth term of an arithmetic series is 5 and its ninth term is 20, find its first and seventh terms.

Find the sum of an arithmetic series where a1=40, d=-3 and n=31.

Find the first five terms and the fifth partial sum of the sequence whose nth term is an=n2-3n.

Not sure how to solve this one! Thanks!!

sin2(t)tan2(t)cos2(t)=?

Very confused on this one. Please help!!

A person starts walking from home and walks: 6 miles east 6 miles southeast 3 miles south 1 miles southwest 4 miles east How much did this person walked a total of in...

Not sure what the steps are to solving this.

I just really struggle with these types of questions. Im not sure how to solve since there are three trig identities. Please help!!

If someone could include steps as to how they got the answer that would be great!! Thanks!!

I get pretty confused with the quadrants. please help!!

A game involves rolling a fair six-sided die. If the number facing upward on the die is a whole number multiple of three, the player wins an amount equal to the number on the die times $20. If the...

(X+5)^2 = (x+9)^2

1. Scientists have observed that living matter contains, in addition to carbon, C 12, a fixed Percentage of a radioactive isotope of carbon, C14. When the living material dies, the amount of C12 present...

I think the answer is √(2+√2)/2 but I don't know how to solve it correctly. Please help. Find the exact value of the trigonometric expression given cos (22.5).

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